Spring-wheel.



G M. TREMMEL & E. CHRISTENSEN. SPRING WHEEL. APPLICATION FILED FEBJT,1910.

987,191. Patented Mar. 21, 1911.

2 sums-sum 1.

Wnwea:

G. M. TRBMMELK: E. CHRISTENSEN.

' SPRING WHEEL.

APPLICATION FILED NIB. 7, 1910.

987,191. I Patented-Mar.21,1911.

2 SHEETSSHEET2.

a fwenxora UNITED,- STATES i-PATENI OFF-Ion.

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To all whom'itmayconcern: l I Bpjit known that we, Gannon Ml;Tannnrn'and'Esrng Gnnisrnxsnx, both citizens of thefUnitedjstates,and'residents o'f Two Riv ers', fin"'ftheicou'ntyof Manitowoc' and 'stateofilviscollsiii, have invented certain' newl'and nseful 1m )r'ovementsin Spring lvheelsfand'we do hereby decla-i-e that-the following'isa'fu'll, clear, and exact descrip tion. thereof.j h 01nihventionconsists in whatis herein particularly'set forth with reference to theaccompanying drawings and pointed out in claims of this specificationItSiOlIJECibeing -'to provide simple, economical, strong, dura- 'bleand-effic ent. sprlngqvheelsfor various vehicles. a b v Figure 1 of thedrawings represents a side elevationof a =.frag1nen.t of one of ourimproved vehicle wheels having parts thereoi.

.. broken away and in section; Fig. 2,-a transverse sectional view.ofthe same on thel-p lane- 1n'd1ated by line. 2-2- 1n F1g. 1; Fig. 3; aside elevation of one of 11 pair of circular plates-employed aspartsof-the. wheel; Fig.

4, a 'horizo1ital sectional. view. indicated by line 4 4 in Fig. 1, andFig.6, ajpartly transverse sectional view of a detail of said wheel.

Referring by numeral to the drawings 6 indicates the hub}? spokes and 8the rim of a for the most part wooden wheel, as ordinarily constructed,and a netal stay-band 9 is shown on the rinn as virtually constituting aart of same. The band and "m are ra i811; bored at regularintervalsgircumferentially' of the same and fittedin each bore is athimblei 10 having an out-er end 1 I flange 11-'opposii1'g ssid band.The'innerend 40 of each thnnble is interiorly screw-threaded for theengagement of the correspondingly threaded nut 12 loose'on a stem 13that ex-' tends outward beyond said thimble." The outer end of each stemengages a socket to:

vided in a solid central portion of an ot ierwise preferably hollowsector-block 14, and

a pin 15 extends through the block and stem, the projecting ends of thepin being engaged with radial slots 16 in preferably 'angularly indentedportions 17 of circular plates 18- -that are bolted to the sides of therim 8 to pr oject'beyond the. same.

The sector-blocks 14 arc shown as being;

' provided with central side recesses engaging the slo tted indentations17 of the plates 18 that serve as guides for said block and to close-theinner end 0 Specification of Letters lete nt. Patented llla l, 21 1911.IApplicat'lon filed-February 7, 1919?- Serial No. am ss-a.

-surrounding each of the stems 13, between.

the corresponding sector-blockand the nut'j,

IZengaging said stem, is a spira1-s'pring1'9,'

the tension of the-spring being regulated by the adjulstment'of said nutin theadjacent thimble 10; a screw-cap 20 being employed -'saidthimble.f Bolted to the plates 18 are-clenc'her-rin 21 engaged by cleneher-heads2-2 of a fiexib e tread 23- that is stretched over the sector- "block'sMandp'referably metal studded upon its periphery.- To prevent creep ofthe tread, 1t.'is provided with inner studs 24 that engage 1':ulialrecesses provided in said. sector-blocks, oneof' these studs in the arrangement specified being shown in Fig. T e' sector-blocks 14',concentric with they rim 8. are normally spaced apart far enoughto'proride for their radialxleld under, pressurc against the resistanceof the springs 19,-

and said blocks are held in alinementby the plates 1 A flexible treadarranged as'he Q-j in shown and described preferable, but 1 may beomitted, and in matters of detailthe construction of the wheel lnay beotherwise inde finitel varied without departure fri'im the genericfeaturesjof bur invent-ion.

\Ye claim:

1. In a vehicle-wheel, the combination ofa rim, thimbles in' the rimradiallythereofat intervals circulnfcrentially'of the-same, a

support in each thimble a stem slidable in the support (and extendingoutward beyond the rim. a sector-block engaging the outer end of thestem concentric with said mm, a

' pin extending transversely through the block and stem, circular platesin connection with the. Sides of the. aforesaid rim and provided withradial slots with 'which the ends of. the

)in are engaged, and a spring under" tension etween said support andblock.

2. In a vehicle-whee], the combination nth a rim, :1 series of radiallyyielding spring controlled sect or-blocks concentric with the rimoutward therefrom. circular plates in connection with said rim andhavingindentationsengaging side rhccsscs provided in the blocks, and prOectwns laterally of said blocks engaging-slots provided in saidindentation of the plates.

3. In a 'ehiclc-wheel. the combination of a rim, thin'iblcs in the rimradially thereof at intervals circumfcrentially of the same. caps indetachable connection with the inncr ends of the thinibles. a supportin,each thimhlc indcpcndent of the cap of the same, a stem and block, 11

In testimony that we claim the foregoing we have hereunto set our handsat Two Rivers in the county of Manitowoc'and State of-VVisconsin-in thepresence of two wit- 15 nesses.

i v slidable in the-support 'and extending our;- ivard beyond the rim,:1 sector-block engaging lthe-Aonte rend ofyeach stem concentric withsaid rim, :1 pin extending transversely through the block and stem,circular plates in connection with the sides of the aforesaid. rim end;provided with radial slots with which the ends of the pin are engn ed,an'd a spring. under tension between'sai s'u port Witnesses:

d a yielding tread inc osing E. J SOIK,

' CHAS. F. Kim.

GEO. M. TR-EMMEL. EMIL CHRISTENSEN.

. Copies of thi-lia'te'i t iiiay'h"-'o bteinedfor five cents each, byaddressing the Commissioner of Patents,

, Washington, D. G.

